NANO IRON, s.r.o. is engaged in production of Zero Valent Iron nanoparticles (Fe(0), nZVI) and technical support in applications. The company disposes of a unique, environmentally friendly and wasteless technology enabling production of Fe(0) nanoparticles at the industrial scale with almost unlimited production capacity. NANO IRON, s.r.o. is a science and technology company, which also focuses on the development of new environmental applications of Fe(0) nanoparticles, study of their effective stabilization and reactivity with selected pollutants.

Company details

Štefánikova 116 , Rajhrad , 66461 Czech Republic

Locations Served

Business Type:
Industry Type:
Soil and Groundwater
Market Focus:
Internationally (various countries)
Year Founded:
less than 1,000,000 €

The company disposes of a unique, environmentally friendly and wasteless technology enabling production of Fe(0) nanoparticles at the industrial scale with almost unlimited production capacity. The produced iron nanoparticles are of ultrasmall dimension with a narrow size distribution, large surface area, extremely high reactivity and excellent migration properties. It is possible to deliver nanoparticles in the form of aqueous dispersions or dry-powder.


  • NANOFER STAR – new air-stable nanopowder, consisting of Fe(0) surface stabilized nanoparticles.
  • NANOFER 25P – pyrophoric nanopowder, consisting of Fe(0) nanoparticles without surface modification, preserved in the inert nitrogen atmosphere.


  • NANOFER 25S – aqueous dispersion of Fe(0) nanoparticles stabilized by a biodegradable organic and an inorganic modifier.
  • NANOFER 25 – aqueous dispersion of Fe(0) nanoparticles stabilized solely by an inorganic modifier.

Nanoparticles of zero-valent iron, produced by unique technology of NANO IRON, s.r.o. company, exhibit an average particles size of 50 nm, an average surface area of 20-25 m2/g, a narrow particle size distribution of 20-100 nm and a high content of iron in the range of 80-90 wt. %. Detailed characteristics of iron nanoparticles.

Nanoparticles of α-Fe have recently become a strategic material with great application potential in the broad range of modern nanotechnologies. Due to their extraordinary reduction capabilities, small size in the range of several tens of nanometers and high reactivity with a broad spectrum of toxic substances, these ultrafine particles are highly applicable in the reduction technologies of groundwater remediation and waste water treatment. In comparison with other frequently used procedures for water treatment, the treatment exploiting of Fe(0) nanoparticles represents environmentally friendly technology since non-toxic and nature-abundant iron oxides (mainly magnetite - Fe3O4) are the products of transformation of Fe(0).


Known imperfection of zero-valent iron nanoparticles slurries is their degradation (oxidation of zero-valent iron). To achieve the highest efficiency of nZVI product the earliest application since manufacturing is essential, leading to long-term storage impossibility in practice. nZVI slurries are also not very advisable for a new product development and further modification in regards of partial nanoparticle surface passivation; dry powder nanoparticles modification and application into the off-shelf liquid appears to be far preferable by contrast.

NANO IRON, s.r.o. is aware of stability, reactivity and persistence requirements of nZVI slurries, as well as demands on a new product development requiring various liquids utilization for nZVI slurry manufacturing in research laboratories and industrial sites. Therefore the Laboratory dispersing unit LD 05 is placed on the market for nZVI slurry manufacturing from the dry nano-powder (NANOFER 25P). Industrial dispersing unit DI 50 for large-volume production is also available.

One of the biggest problems our customers are dealing with is the identification of active agents, represented by zero-valent iron nanoparticles in delivered slurries. Only the quantity and size of reactive nanoparticles determines the efficiency of slurry. One of the most common used analytical method, Mössbauer spectroscopy, is difficult and very expensive for most of our customers. On this account NANO IRON company is placing the nZVI TESTER on the market, allowing simple, fast and relatively fine measurement of zero-valent iron concentration in a slurry, even under field conditions.